KH 310 A
speaker
$2,600
Used market: $1,870*
Specifications
3 of 4 values have a recorded sourceExpert Audio Engineering Commentary
Headroom Notes
A three-way with crossovers at 650 Hz and 2 kHz, so the midrange dome carries the vocal band on its own. Same pattern as the KH 150: the half-space maximum is the full-space one plus exactly 6 dB and is marked «calc.». Input impedance is printed as «>13k Ohms», a lower bound rather than a value; we store 13000 as the guaranteed floor.
What the datasheet actually says
Quoted verbatim from the manufacturer’s own page, with the date we checked it. We state what is printed, not what anyone intended by it.
«Max. SPL calc. in half space at 3% THD at 1m (averaged between 100 Hz and 6 kHz): 116.3 dB SPL»
Neumann prints two maximum-SPL rows that differ by exactly 6.0 dB, and the higher of the two carries the word «calc.» — it is arithmetic applied to the measured free-space result, not an independent measurement. The 6 dB is the theoretical gain of a rigid infinite boundary directly behind the source. A monitor on a stand in a treated room does not get all of it, and a monitor flush-mounted into a wall gets more of it than a monitor 30 cm in front of one. The figure therefore describes the intended installation, not the loudspeaker.
checked 8/5/2026* Estimated with the depreciation fallback (~72% retained value). · checked on 8/5/2026